kotlinx.serialization release checklist

To release new <version> of kotlinx.serialization:

1. Checkout dev branch and update:
   git checkout dev && git pull

2. Make sure the master branch is fully merged into dev:
   git merge origin/master

3. Search & replace <old-version> with <version> across the project files. Should replace in:

   • README.md
   • gradle.properties
   • integration-test/gradle.properties

   Update Kotlin version, if necessary.

4. Write release notes in CHANGELOG.md:

   • Use old releases as example of style.
   • Write each change on a single line (don't wrap with CR).
   • Study commit message from previous release.

   git changelog from git-extras may help you with that.

5. If necessary, commit your changes to a new branch called <version>-release and send it for review, then merge it to dev branch.
   If review is not required, commit directly to dev.

6. Tag version:
   git tag v<version>

7. Push your changes:
   git push origin dev && git push origin --tags

8. On TeamCity integration server:

   • Wait until "Runtime library (Build – Aggregated)" configuration for committed dev branch passes tests.
   • Run "Runtime library (Deploy - Train)" configuration:
     • On 'Changes' tab, select dev branch and corresponding commit.
     • On 'Parameters' tab, find 'Deploy version' and fill in with <version>.

9. In Sonatype admin interface:

   • Close the repository and wait for it to verify.
   • Release it.

10. Propose the website documentation update:
    

    • Set a new value for KOTLINX_SERIALIZATION_RELEASE_TAG, creating a pull request in the website's repository.
    • The website team will be notified about the pull request, review your changes, and merge it to master after all checks pass.
    • Once the pull request is merged to the main branch, it automatically will trigger the website's update, which will be done within an hour.

11. Create a new release in Github releases. Use created git tag for title and changelog message for body.

12. Switch back to master branch and update it:
    

    git checkout master && git pull
    git merge --ff-only dev
    git push origin master
    

13. Announce new release in Slack.